Moody Mauve vs Luxion Purple

How close are they?

ΔE 26.0, loose: different enough that you should pick on purpose. Luxion Purple is a little darker, more saturated, cooler than Moody Mauve.

Can I use Luxion Purple instead of Moody Mauve?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 26). Luxion Purple is a little darker, more saturated, cooler than Moody Mauve.

Can I use Moody Mauve instead of Luxion Purple?

The same difference applies the other way round: Moody Mauve is a little lighter, more muted, warmer.

ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.